code: def num_epochs(self) -> int:
      return self.__num_epochs
  
imports: from trainers import Trainer
  from trainers import extend_tensor
  from datasets import OGBNPapers100MDataset
  from models.pyg import GraphSAGE
  import torch
  import numpy
  import torch.distributed
  from torch.nn.parallel import DistributedDataParallel
  import torch.nn.functional
  from torch_geometric.utils.sparse import index2ptr
  from torch_geometric.data import HeteroData
  from torch_geometric.loader import NeighborLoader
  import gc
  import os
  import time
label_desc: Use image node_id 7 for calling the PyGNativeTrainer obj's underlying member method code with example usage: obj.num_epochs() and returns: self